发明名称 |
Date driving mechanism of watch |
摘要 |
The date driving mechanism of a watch comprises a date driving wheel having a partially teethed portion engaged with teeth of a calendar driving wheel which in turn drives a calendar display dial so as to advance the calendar display dial a given amount each rotation of the date driving wheel. A cam integral with the date driving wheel engages a pivotal control member so as to hold the control member against the calendar driving wheel normally to restrain movement of the date dial. The cam has a flat side so as to release the calendar driving wheel from restraint when being driven by the teethed portion of the date driving wheel, thereby relieving load on the date driving wheel. The control member has a resilient arm which yields to permit manual correction of the calendar display.
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申请公布号 |
US4261047(A) |
申请公布日期 |
1981.04.07 |
申请号 |
US19790049990 |
申请日期 |
1979.06.19 |
申请人 |
KABUSHIKI KAISHA DAINI SEIKOSHA |
发明人 |
NAKAO, HIDEYUKI |
分类号 |
G04B19/253;(IPC1-7):G04B19/24;G04B19/20 |
主分类号 |
G04B19/253 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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